No, there is no evidence that Pfizer’s vaccine causes infertility

The social media platform this week was filled with concerns about a worrisome headline that the Pfizer-BioNotech coronavirus vaccine, which has been approved for emergency use this week, may cause infertility in women. But experts say these claims are baseless.

“It’s a myth, it’s wrong – there’s no evidence to support their belief,” said Saad Omar, a vaccine specialist at Yale University. Specialist agencies that oversee the clearance of vaccines for use in people, he said, are “a rigorous process” for weed products that can cause such devastating effects. “And when things happen, action is taken,” Dr. Omar said.

This week, Food and Drug Administration reiterated There is reliance on data showing that the vaccine can protect people from developing Kovid-19 without causing serious side effects. Pfizer vaccine is given a green light Britain And Canada.

Rumors of infertility were fueled by an article published by a blog called Health and Wealth News, falsely claiming that Pfizer’s vaccine contained ingredients capable of “training proteins to attack a woman” Is a protein that plays an important role in the development of the placenta.

The baseless claims were made by a retired British doctor and former Pfizer employee, Dr. Taken from a petition written by Michael Yedon, which has been criticized before. Misleading thoughts On coronovirus. Dr. Yadon has reduced the severity of the epidemic in the UK and publicly voiced its complaints about the futility of investing in vaccines.

But experts say that there is no evidence to support the infertility claim.

The key component in Pfizer’s vaccine (as well as a vaccine made by Modern that is also rapidly in the way of emergency evacuation) is the genetic material that instructs human cells to produce a coronavirus protein called spike. The production of this protein teaches the body to fight the coronavirus. Company spokeswoman Jessica Pitts said there is no placentae protein, or genetic material, that directs the manufacture of plaquental proteins in Pfizer’s vaccine.

A deceptive blog piece drew comparisons between a coronovirus spike and a type of placental protein. The similarities were strong enough, it was argued, that a vaccine could cause the immune system to confuse the two proteins and attack the placenta.

But Stephanie Langel, an expert in maternal and neonatal immunity at Duke University and an immunologist, reported that coronovirus spikes and proteins under consideration have virtually nothing in common, making the vaccine highly unlikely to trigger a response to these delicate tissues. The two proteins share only a minor stretch of content; Their mix is ​​similar to mistaking a rhinoceros for a jaguar because they are wearing the same collar.

Dr. Langel also said that the human body has evolved to destroy immune responses that can damage their own tissues.

“If we didn’t have it, we wouldn’t even make it 1 on the last day of life,” she said.

Pfizer pointed to a recent study that found coronovirus Did not seem to take risks for pregnancy related problems.

“There is no data to suggest that the Pfizer BioNotech vaccine candidate causes infertility,” the company said in an email statement.

Dr. Langel and Drs. Omar both mentioned that researchers will continue to monitor the well-being of vaccinated people as Pfizer’s products and others are rolled out worldwide. Dr. Langel said there remains a lack of data among people who become pregnant. But unfounded discussions about how vaccines can cause infertility were “particularly damaging” to scientifically supported efforts to protect people with vaccines.

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